Improvement in railroad-switches



-D. PO'LLOOK. Railroad-Switch.

No. 199,570. Patented Jan. 22, 1878.

UNITED STATES PATENT OFFICE.

DARIUS POLLOOK, OF WOOSTER, INDIANA.

IMPROVEMENT IN RAILROAD-SWITCHES.

Specification forming part of Letters Patent No. 199,570, dated January22, 1878; application filed December 22, 1877.

To all whom it may concern:

Be it known that I, DARIUS PoLLooK, of Wooster, in the county ofKosciusko and State of Indiana, have invented a new and valuableImprovement in Railroad-Switches; and I do hereby declare that thefollowing is a full, clear, and exact description of the constructionand operation of the same, reference being had to the annexed drawings,making a part of this specification, and to the letters and figures ofreference marked thereon.

Figure 1 of the drawings is a plan view of my railroad-switch, and Figs.2 and 3 are perspective details of the same.

My invention relates to railroad-switches; and it consists in theconstruction of the switch-rails so as to overlap the main rail at thecrossing, and the operating mechanism, as

will be hereinafter more fully set forth.

The annexed drawing, to which reference is made, fully illustrates myinvention.

A A represent the rails of the main track, secured in any of the knownand usual ways to the ties B B. G is the outside stationary rail of theside track, and O is the rail extending from the'end of said side railto the 'side of the main rail, and arranged on the same plane with themain rails.

Between the two main rails A A are two rails, D and D having theiradjoining ends pivoted to one of the ties B. The rail D unites with arail, D, outside of the main track, and which rail D forms theconnection with I the inner line of rails of the side track.

The rails O, D, D, and D are the switchrails, and are all operatedsimultaneously from a crank-shaft, G, the rails O and D being connectedwith one crank by a bar or rod, H, while the rails D and D are connectedby separate rods or bars I I with separate cranks on said shaft. Themovable ends of all the switch-rails are supported upon inclined bars ofthe main rails, and their upper surfaces are made inclined at the ends,as shown at d.

When the switch is open the wheels will pass up the inclines formed bythe overlapping rails, the outside wheels at once passing over the mainrail onto the rail 0, and the inside wheels, running over the elevatedends of the rails D D, also pass over the mainrail. Thus I am enabled todispense with fi'ogs in the main rails.

E is 'a guide-rail, alongside of the rail 0, to

running over the elevated ends of the rails D and D.

What I claim as new, and desire to secure by Letters Patent, is-

The rails G, D, D, andD of the construc-' prevent the car running oi thetrack while Intestirnony that I claim the above I have hereuntosubscribed my name in the presence of two witnesses.

- DARIUS POLLOOK. Witnesses:

WILLIAM WILLIAMS, ANDREW POLLOCK.

